ALEXANDRIA, Va., May 19 -- United States Patent no. 12,630,894, issued on May 19, was assigned to JFE STEEL Corp. (Tokyo).
"Linear groove formation method and method of producing grain-oriented electrical steel sheet" was invented by Ryuichi Suehiro (Tokyo), Takeshi Omura (Tokyo), Shigehiro Takajo (Tokyo) and Yoshihisa Ichihara (Tokyo).
According to the abstract* released by the U.S. Patent & Trademark Office: "To form linear grooves of desired groove width on a metal strip surface and provide a grain-oriented electrical steel sheet having excellent magnetic properties, a linear groove formation method comprises: forming a resist coating on at least one surface of a metal strip; thereafter irradiating the resist coating with a laser while...